<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
    <meta name="description" content="Use the split property to only show layers on one side of a slider.">
    <meta name="cesium-sandcastle-labels" content="Beginner, Tutorials, Showcases">
    <title>Cesium Demo</title>
    <script type="text/javascript" src="../Sandcastle-header.js"></script>
    <script type="text/javascript" src="../../../Build/CesiumUnminified/Cesium.js" nomodule></script>
    <script type="module" src="../load-cesium-es6.js"></script>
</head>
<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">

<style>
    @import url(../templates/bucket.css);

    #slider {
        position: absolute;
        left: 50%;
        top: 0px;
        background-color: #D3D3D3;
        width: 5px;
        height: 100%;
        z-index: 9999;
    }

    #slider:hover {
        cursor: ew-resize;
    }

</style>

<div id="cesiumContainer" class="fullSize">
    <div id="slider"></div>
</div>
<div id="loadingOverlay"><h1>Loading...</h1></div>
<div id="toolbar"></div>

<script id="cesium_sandcastle_script">

function startup(Cesium) {
    'use strict';
//Sandcastle_Begin
var viewer = new Cesium.Viewer('cesiumContainer', {
    imageryProvider : new Cesium.ArcGisMapServerImageryProvider({
        url : 'https://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer'
    }),
    baseLayerPicker : false,
    infoBox : false
});

var layers = viewer.imageryLayers;
var earthAtNight = layers.addImageryProvider(new Cesium.IonImageryProvider({ assetId: 3812 }));
earthAtNight.splitDirection = Cesium.ImagerySplitDirection.LEFT; // Only show to the left of the slider.

// Sync the position of the slider with the split position
var slider = document.getElementById('slider');
viewer.scene.imagerySplitPosition = (slider.offsetLeft) / slider.parentElement.offsetWidth;

var handler = new Cesium.ScreenSpaceEventHandler(slider);

var moveActive = false;

function move(movement) {
    if(!moveActive) {
        return;
    }

    var relativeOffset = movement.endPosition.x ;
    var splitPosition = (slider.offsetLeft + relativeOffset) / slider.parentElement.offsetWidth;
    slider.style.left = 100.0 * splitPosition + '%';
    viewer.scene.imagerySplitPosition = splitPosition;
}

handler.setInputAction(function() {
    moveActive = true;
}, Cesium.ScreenSpaceEventType.LEFT_DOWN);
handler.setInputAction(function() {
    moveActive = true;
}, Cesium.ScreenSpaceEventType.PINCH_START);

handler.setInputAction(move, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
handler.setInputAction(move, Cesium.ScreenSpaceEventType.PINCH_MOVE);

handler.setInputAction(function() {
    moveActive = false;
}, Cesium.ScreenSpaceEventType.LEFT_UP);
handler.setInputAction(function() {
    moveActive = false;
}, Cesium.ScreenSpaceEventType.PINCH_END);

//Sandcastle_End
    Sandcastle.finishedLoading();
}
if (typeof Cesium !== 'undefined') {
    window.startupCalled = true;
    startup(Cesium);
}
</script>

</body>
</html>
